Notebook freezes on shutdown, brightness issues

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Notebook freezes on shutdown, brightness issues

Postby robin92 on Mon Jul 16, 2012 5:12 am

Hello everyone,

I've been using Linux for several months, but it's my second day with this particullar distro. I must say I like it but I suffer from two unresolved issues which have a serious impact on deriving pleasure from using this OS.

1. This is a top priority issue: computer randomly either freezes on shutdown or keeps printing strange things in a loop. I really don't know what to do with this matter or even what more info to provide so any help is more than appreciated.

2. Classic laptop brightness issues. Linux starts with full brightness and there's no way I can reduce it (neither through notebook's functional keys nor through applications). I tried changing /etc/default/grub from
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GRUB_CMDLINE_LINUX_DEFAULT="quite splash acpi_backlight=vendor"
but nothing happened.

I am using Linux Mint 13 "Maya" Cinammon on a TOSHIBA L650-1NU notebook.

EDIT: Successfully solved second issue by adding
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in spite of
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EDIT: I've taken a photo of that strange text during shutdown. Take a look
EDIT: I managed to discover what is causing the first issuse - it's FGLRX Radeon drivers from repository (Additional drivers section). When I downloaded the newest from AMD website and installed them everything worked just fine. What's more, it occured to me that second problem could be caused by the driver as well. I checked this and was right. However, after updating Linux Mint my system crashed again. I've lost a bottom panel as well as window decorations though I am still able to open folders and so on.
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